Metal pole



M. LACHMAN.

METAL POLE. APPLICATION FILED JUL-Y 2. I920.

H 2 a W mm 1 f L WING m m t Mamza latented Uri. Sbl, i922.

MAURICE LAGHMAN, OF NEW YORK, N. Y., ASSIG-NOR TO ELECTED STEEL PRODUCTS CORPORATION, OF NEVJ YORK,N. Y., A CORPORATION OF NEW YORK.

METAL POLE.

Application filed July 2,

T 0 aZZ whom it may concern:

Be it known that l,

MAURICE LAGHMAN,

York and State of New York,

have invented certain new and useful Improvements in Metal Poles, of which the following is a specification.

This invention relates to the construction of metal poles for telegraph, other purposes.

The object of the invention telephone and is to construct a simple, light and strong metal pole Which will be low in cost of manufacture and high in capacity to withstand. the strains to which poles of this character are subjected.

' he invention consists in the construction of metal pole as hereinafter then specified in the ularly described and claims.

more partic- In the accompanying drawings, 1 have illustrated a pole constructed in the preferred form of the in which Fig. 1 is which the formed.

Fig. 2 is structed in a plan view a front elevation and arranged invention and of the blank from main element of the pole is of a pole conaccordance with this invention.

Fig. 3 is a transverse vertical cross-section of the same taken on the line 33 and looking in the direction of the arrows.

F1 4% is a horizontal cross-section taken b on. the

Fig.

line et-i of Fig. 2.

5 is a similar cross-section illustrating a modification in the arrangement of the side members.

In the drawings,

1 indicates a metal plate which forms the main element or body of the pole. The plate 1 is provided with tapered longitudinal edges so that the plate tapers from the bottom to the top or from one end to the other.

The plate along the tapered edges is proof leaving tongues or ears 3 Preferably the cuts ther into the plate as they top to the bottom whereby ears 3 are each length as they approach the cuts or slits '2 therebetween.

2 gradually enter furproceed from the the resultant of a more or less greater bottom.

The ears 3 along each longitudinal edge of the plate are bent laterally thereto, alter- 1920. Serial No. 393,626.

nate ears being bent to opposite sides of the plate and are preferably bent at right angles thereto. I L

ft indicates the side members of the pole and in the case illustrated they are in the form of angle iron uprights one of the flanges of which bears against the ears 3, the other flange projecting outwardly as indicated in Fig. 4 or inwardly as indicated in the modification Fig. 5.

Two upright members t are disposed at each side of the pole and are located along each outer edge of the series of ears 3, thus connecting the ears together and due to the varying lengths of the ears the members -t cause the pole as a whole to be tapered from end to end in side elevation. The taper of the plate 1 gives a taper to the pole in front elevation.

The angle members 4 are firmly secured to the ears 3 by spot welding, riveting or any other suitable means.

lVhat I claim as my invention is:-

1. A metal pole for telegraph, telephone and other purposes comprising essentially five upright load sustaining members consisting respectively of a main or central substantially fiat upright metal plate extending from side to side of the pole and four side or peripheral members each consisting of an upright angle bar fastened by a flat face of one angle against the flat face of ears integral with and bent from the central plate, and tying the members against vertical displacement with relation to one another, said angle also strengthening the pole as a whole against bending or buckling by resistance in the plane of the angle and ear and transversely to the general plane of the flat cen flat face of ears integral tions from the edges of the central plate, a general plane transverse to the first-named 10 and tying the members against vertical clisplane.

placement with relation to one another, said Signed at New York in the county of New angle also strengthening the pole as a Whole York and State of New York this 1st day of against benclfing or bulokling by resistance in July A. D. 1920.

the plane 0 the an e and ear and transversely to the genera l plane of the fiat cen- MAURICE LACHMAN' tral member, the remaining angle of said Witness:

upright bar serving to resist distortion in IRENE LEFKOWITZ. 

